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Circuit breaker 230/400V, 10kA, 1-pole, D, 40A
Model
product brand name SENTRON
product designation Miniature circuit breaker
design of the product Miniature circuit breaker 5SN
General technical data
number of poles 1
number of poles / note 1P
tripping characteristic class D
circuit-breaker / Design 5SN4CN
overvoltage category 3
degree of pollution 2
Voltage
insulation voltage
with single-phase operation / at AC / rated
value
250 V
with multi-phase operation / at AC / rated value 440 V
Supply voltage
type of voltage AC
operational current / at AC / rated value 40 A
supply voltage / at AC / rated value 400 V
operating voltage
with multi-phase operation / at AC / maximum 440 V
at DC / rated value / maximum 72 V
supply voltage frequency
rated value 50 Hz
Protection class
protection class IP IP20, with connected conductors
Switching capacity
switching capacity current
acc. to EN 60898 / rated value 10 kA
Dissipation
power loss W / for rated value of the current / at AC
/ in hot operating state / per pole
3.3 W
Current
Tripping residual / rated value / derated current / at
40 Cel
36.96 A
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Reviews
- K
Kristina Hinton
Aug 10, 2025
Siemens Circuit Breaker 5SN4140-8CNI appreciate the helpful staff at OKmarts – they're always willing to assist!HelpfulUnhelpful - R
Ramiro Martinez
Dec 06, 2024
Siemens Circuit Breaker 5SN4140-8CNQuick and efficient order processing and delivery.HelpfulUnhelpful - R
Rick Waters
Oct 14, 2024
Siemens Circuit Breaker 5SN4140-8CNWe're impressed by OKmarts' commitment to customer satisfaction - they delivered the device as promised.HelpfulUnhelpful - G
Glorianna Cardenas
Aug 11, 2024
Siemens Circuit Breaker 5SN4140-8CNEasy on line order and shipment and delivery as promised. No problems.HelpfulUnhelpful - A
Anonymous user
Nov 25, 2022
Siemens Circuit Breaker 5SN4140-8CNAll was ok! No problems whatsoever.HelpfulUnhelpful
Siemens Circuit Breaker 5SN4140-8CN
✔ In Stock (Can ship in 5-7 days)

Online Support 24/7
12 Months Warranty for New Products
30 Days Money Back Guarantee
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